Dyfyniad APA

Ogg, F. A., & Ray, P. O. Essentials of American government (6.1950,7.1952,8.1961.).

Dyfyniad Arddull Chicago

Ogg, Fgrederic A., and P. Orman Ray. Essentials of American Government. 6.1950,7.1952,8.1961.

Dyfyniad MLA

Ogg, Fgrederic A., and P. Orman Ray. Essentials of American Government. 6.1950,7.1952,8.1961.

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